5 replies to this topic

[CS10]

Dear Members,

 

I am a new member to this great engineering forum. it's an honour to be able to involve in this forum.

 

I would like to get some assistance for the work I am currently doing. I am doing a calculation for vapour liquid separator sizing check.

 

I having some difficulties of the steps for the calculation. Actually, I am doing the calculation to determine the design capacity of the separator and compare this with the actual operation conditions to see the whether it's above or under the design capacity (if we increase the inlet flow rate).

 

I have looked at some references, what they did is determine the size of the separator from the fluid properties and flow rate. 

 

For my case, i want to determine the flow rate from the known separator size and actual operation condition. Let say:

Horizontal Separator with mist extractor

Standard flow rate = 150 ft3/s

Operating conditions P = 800 psia , T = 80 F 

Vessel D = 9 ft, L = 25 ft

 

How can i work this out? Can somebody assist me with this calculation?

 

I would be appreciated if you can help me. Thank you,

 

Regards.

[breizh]

Hi ,

Consider the resources attached to support your work.

 

hope this helps

 

Breizh

Edited by breizh, 26 August 2016 - 02:55 AM.

[Bobby Strain]

Once you get through the material you can use the software at my site to confirm your calculations. Just Google my name.

 

Bobby

[CS10]

Breizh : Thank you for sharing these references.

Bobby : Thank you for providing me with your website.

 

At our gas plant, we have several separators at site to check (the one that i am working on is inlet separator that we use to treat the gas before going to further treatment). Currently, we are having increased inlet flow.

 

What I am doing is to determine whether the separator is sized adequately for such an increase.

 

I am still working on it, below are the step i am taking (not really sure the correct way):

- calculate max. allowable vap. velocity (gas and liq density from HYSYS)

- calculate cross sectional area

- determine the flow rate

 

I have not got  any good answer for my calc.

 

 

Thanks and regards,

Edited by D'Costa, 30 August 2016 - 07:26 PM.

[Bobby Strain]

It sounds like your separator is horizontal. There is a rating program for such on the website. That, along with all that Breizh has provided should make it a simple task. Strange that someone assigned the chore to you. I hope someone is guiding you.

 

Bobby

[CS10]

Yes... The separator is Horizontal.

Anyway, thank you for your support. With the website and the reference papers you provided, helps me to working on this calculations.

 

Thank you,